package com.wchat.controller;

import com.wchat.config.WeChatMpConfig;
import com.wchat.enums.ResultEnum;
import com.wchat.exceptions.SellException;
import lombok.extern.slf4j.Slf4j;
import me.chanjar.weixin.common.api.WxConsts;
import me.chanjar.weixin.common.exception.WxErrorException;
import me.chanjar.weixin.mp.api.WxMpService;
import me.chanjar.weixin.mp.api.impl.WxMpServiceImpl;
import me.chanjar.weixin.mp.bean.result.WxMpOAuth2AccessToken;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import java.net.URLEncoder;

/**
 * Created by yangtianrui on 17/8/14.
 */
@Controller
@RequestMapping("/wechat")
@Slf4j
public class WeChatController {

    @Autowired
    private WxMpService wxMpService;
    @GetMapping("/authorize")
    public String authorize(@RequestParam("returnUrl") String returnUrl)
    {
        String url ="http://ytr.natapp1.cc/sell/wechat/userinfo";
        // 该地址就是 提跳转到微信客户端打开的链接
        String resultUrl=  wxMpService.oauth2buildAuthorizationUrl(url, WxConsts.OAUTH2_SCOPE_USER_INFO, URLEncoder.encode(returnUrl));
        log.info("[微信网页授权]获取resulr={}",resultUrl);
        return "redirect:"+resultUrl;
    }
    @GetMapping("/userinfo")
    public String userInfo(@RequestParam("code")String code,
                           @RequestParam("state")String returnUrl)
    {
        WxMpOAuth2AccessToken wxMpOAuth2AccessToken = new WxMpOAuth2AccessToken();
        try {
            wxMpOAuth2AccessToken = wxMpService.oauth2getAccessToken(code);
        }catch (WxErrorException e){
            log.error("[微信网页授权]{}",e);
            throw new SellException(ResultEnum.WX_MP_ERROR.getCode(),e.getError().getErrorMsg());
        }
        String openid = wxMpOAuth2AccessToken.getOpenId();
        log.info("openid={}",openid);
        return "redirect:"+returnUrl+"?openid="+openid;
    }

}
